Slicing machine



May 21, 1935. w J. CAMPBELL 2,001,770

SLICING MACHINE Filed Nov. 2, 1952 4 Sheets-Sheet 1 71 Uefa for May 2l, 1935. l A W. J. CAMPBELL SLIGING MACHINE Filed Nov. 2, 1952 4 sheets-sheet 2 `May 2l, 1935. y w. J. CAMPBELL 2,001,770

SLIC ING MACHINE Filed Nov.' 2, 1932 4 Sheets-Sheet 5 4 Sheets-Shet 4 77W/ m wm i f ef. ww

Patented May 21, 1935 UNITED STATES PATENT OFFICE SLICING MACHINE William J. Campbell, Indianapolis, Ind., lassigner to American Slicing Machine Company, Chicago, Ill., a corporation of New York Application November 2, 1922. serial No. 640,784.

10 Claims.

My invention relates to an improvement in slicing machines and has for one purpose the provision of a slicing machine which shall be light, small, and easy'to handle but which shall have the efficiency, speed and capacity of considerably larger machines. Another object is the provision of an improved drip pan for use with a; slicing machine. Another Objectis the provision of improved mounting means for a guard plate ffor a slicing machine. i ,y l

l The present application is a` continuation in dated June 5, 1934.

Other objects will appear from time to time in :the course of the'specication and claims; l

I illustrate my invention more or less diagrammatically in the accompanying drawings, where- `Figure l isa plan view with parts in horizontal section, taken alonglthe line I-I of Figure 2;

Figure 2 is a front elevation;

Figure 3 is a section on the line 3-3 of Figure 2;

I Figure 4 is a section on ure 2;

Figure 5 is a ure 4;

Figure 6 is a detail of the guard platey Figure 7 is a partial top plan view with part broken away;V

Figure 8 is a section on the line 8-8 of Figure 2; Figure 9 is a section on the line 9--9 of Figure 2;

Figure 10 is a section on the line III-,I ll of Figure 2; and

Figure 1l is a detail.

Like parts are indicated by like symbols throughout the specification and drawings.

Referring to the drawings, A generally indicates any suitable base having anti-vibrational pads or supports A1 which rest uponrany suitable supporting surface A2 for example a counter or the like.

B indicates a motorhousing mounted on the the line 4;-4 of Figsection on the une 5 5 of Figbase A. B1 is the motor shaft and B2 a pulley on the shaftabout which passes a belt B3.

C indicates a. housing extension projecting up-V wardly from the base A. Formed integrally with it is a flared sleeve C1 terminating rearwardly in a generally cylindrical portion C2. Positioned within the portion C2, the details of which form no part of the present invention and are not indicated herein, is any suitable bearing means for the knife shaft C3 on which is mounted a pulley (Cl. 14S- 102) C4 and the knife C5. As will be seen for example in Figure 1Y the pulley is positioned within and is housed by the member C1 but the cutting edge of the knife C5 extends outwardly beyond it as at C6, the rear face of the knife being notched or recessed as at C7 to receive and overlap the outer edge of the member C1. Any suitable means may be employed to hold knife and pulley in place, for example the axial screw C? andthe radially spaced screws C10. The knife may be removed from the knife shaft, while leaving the pulley in place, by removing the screw C9. `The pulley 'may be removed by loosening the screws C10. C12

indicates an end wall of the upward housing projection C and C13 the rear wall. As is shown in Figure 1, the rear wall is apertured as at C14 to permit the passage therethrough of the motor shaft B1 and of a portion of the motor housing B.

` D indicates a shield positioned between the knife transmission and the knife itself. It may seat for example against the inward projection D1 on the end wall C12 and it extends well within the Yperiphery of the cutting edge of the knife, preferably approaching the hub of the knife as shown in Figure l. The inner edge may seat against the ledge D2, the member being apertured as at DB to permit the passage of the hub of the knife therethrough. It may be held in place as by the screws D4. It serves as a shield between the knife and the knife transmission, whereby no grease, drippings or-scraps can penetrate to the transmission.` Since it entirely surrounds the knife, within the periphery of the knife, it will be clear that the centrifugal effect of the rotation of the knife will be to prevent the penetration of any such material sufficiently inwardly toward the axis of rotation of the knife to pass into the aperture D3.

The forward face of the upstanding housing member C is closed as by the guard plate generally indicated as E and shown in detail in Figure 6. As is shown in Figuresl and 2 the axis of the knife is slightly tilted to permit the arcuate edge E1 of the guard plate to penetrate a forward hollow'E2 of the knife and to lie substantially flush with the very slightly bowed cutting plane defined by the cutting edge of the` knife. The guard plate carries a scraper E? secured thereon in any suitable manner, for example by the adjusting screw E4. The details of the scraper do not of themselves form part of the present in-` vention. 'I'he lowerA edge of the guard plate is notched as at E5 E5 to: seat upon supporting pins E6 which may be screwthreaded for adjustment into the portion of the baseor frame to which .ay l

they are secured, as shown in Figure 3. Each such pin may include a normally fixed lenticular guard plate engaging member E7 and an opposed movable lenticular member E7 thrust thereagainst as by the coil spring E2. As the opposed faces of the members E1, E7 are flared apart it will be understood that the guard plate may be readily positioned thereupon, the opposed members having, in response to the action of the spring E2 a snap action permitting ready insertion of the guard plate but gripping the guard plate when in position. The upper edge of the guard plate E is provided with ears E0 E10 at right angles to the face of the plate proper such ears overlying top horizontal portions E11 of the frame member C. They are slotted as at E12 in such fashion that when the plate is swung into the full line position of Figure 3 they pass about the screwthreaded securing pins E20 which hold down the top cover plate G. As will be seen from Figure 6 the ears E9 E10 are of different levels and the guard plate is irregularly formed to permit movement of a knife sharpening assembly which will later be described. The plate E' is outwardly offset at Ytop and bottom as at E13 E14 in order to permit the arcuate edge E1 to penetrate the forward hollow of the knife C5. In orderto prevent any unintended contact between the guard plate E and the knife, I provide an -anti-frictional fiber stud or spacing member indicated as C20 and shown for example in Figures l and 2.' This anti-frictional stud C20 limits the movement of the guard plate toward the knife and prevents any thrust against the guard plate from causing the guard plate to imp-inge against the knife. There is normally a clearance between the inner face of the guard plate E and the outer end of the abutment C20, but the parte are so proportioned that a thrust against the face of the guard plate E which might tend to deform itl or push it against the knife will bring it into contact, instead, with the abutment C20, thus protecting the knife and preventing the noise which would be caused by a metal to metal contact if the inner face of the guard plate did engage any part of the knife.

The lower edge of the guard plate E is preferably outwardly bent as at E10, to facilitate its inlsertion between the engaging members E'1 when the upper edge of the guard plate is outwardly tilted for convenient insertion. A handle E11 may be employed for easy handling of the guard plate. In order to permit ready insertion and wwithdrawal of the ears E0 E10 the top portion E11 of the frame member C and portions of the edgeof the cover plate G may be beveled as at E12. Mounted on one of the horizontal portions E11 of the frame member C is a plate E10 which is slotted as at E22 to receive an adjusting and locking screw E21. The slot E22 being inclined, by moving the member E19 its forward edge may be adjusted inwardly or outwardly in relation to the gue rd plate E and serves as a limit to limit the inward movement of the guard plate E to permit its accurate adjustment in relation to the knife. For example it is desired that the arcuate edge of the guard plat-e penetrate the forward hollow E2 of the knife but it is necessary that it does not' Acontact any portion of the knife. r

Hence the necessity of an accurate adjustment or limit of the inward movement of the guard plate E toward the knife.

In order to assist in locking the guard plate E in position I also provide spring elements E25 ith rolled edges E20. When the locking members E20 are up and the cover plate G is lifted, the springs E25 flex upwardly and permit a ready insertion of the ears E9 E10. When the member E20 is rotated into locking position, then the members E20 serve additionally to hold the guard plate in locked position, as shown in Figure 3. The position of the springs E25 may be adjusted as by means of the adjusting slot E27 and the locking screws E21 and E20 passing therethrough.

Positioned on the base, and forwardly of the knife, are the tracks H H1, the outer tracks H1 being for example mounted on outwardly extending arms' H2. Movable along said tracks is a carriage member generally indicated as H3 which includes track engaging members H4 H5. Mounted on the carriage H3 is the work receiving member which includes a main portion H6 downwardly inclined forwardly toward the knife when the parts are in `the position shown in Figure 2. At the lower edge is an angle H7 at right angles thereto, and with the rounded upper edge portion H0. The portion of the member H6 adjacent the cutting plane extends outwardly as' at H9 to terminate in the roller edge H10. The outer portion terminates as at H11. H12 indicates a guide pin mounted on the carriage and terminating in a tapered portion H13, a roundedenlargement H11 and a final taper H15. The maximum diameter of the portion I-I11 is substantially the same as the maximum diameter of the body of the pin or shaft H12.

In order to sharpen the knife I provide a knife sharpening assembly positioned beneath the cover `G which includes a unitary lever G1 with the outer handle G2. Mounted along the lever and rotatable in relation thereto is the stone Gvand the metallic burr removingv disc G4. Yielding means are employed, for example the spring G5, for keeping the sharpening lever in intermediate position with the stone and the metal disc both out of contact with the knife edge. The operator may move the lever in either direction, against the pull of the spring G5. The plate G is upwardly Voffset as at G5 to give space for the sharpening assembly and is apertured as at G7 to permit the lever G2 to extend outwardly therethrough. The lever is pivotally supported concentrically with one of the securing members E20. Such member may be surrounded by a bearing sleeve G8.

Positioned to the rear of the cutting plane is any suitable slice receiving tray, normally fixed in position, indicated as K. It is upwardly extended at one end as at H1 and is also upwardly extended forwardly as at K2. It may be removed, but is normally locked in position in relation to the slicing machine assembly. The forward edge K2 is herein indicated as terminating along a rectilinear horizontal plane as at K3. The flange K2 may include an arcuate portion H4 conforming generally to the arc of the knife and closely approaching it. K5 is an outwardly extending projection from the forward face of the flange K2 as illustrated in Figures 2, 5 and lO, the purpose of which will later appear. H4 H5 are preferably eccentrically formed'in relation to the axis of rotation of the knife C0, the throat between them increasing progressively inthe direction of rotation of the knife. This prevents wedging of the material, as the rotation of the knife tends to move the particles from the narrower to the wider portion of the separating space. Therefore, the material is freed and may drop into the refuse trough.

L indicates a gauge plate support or bracket which extends rearwardly as at L1 and has a gauge `plate L2 securedthereto asibythe screws L3. L4 is any suitable `control lever handlefor the gauge plate, the actuating connection not being indicated and forming no partof the present invention. g i

`P generally indicates a refuse ordrip pan positioned on the frame A adjacent the lower edge of i the knife. I illustrate for example a bottom P1 which is generally arcuate or rounded in longitudinal Vertical section. Referring to its plan view' as shown in 'Figure 4 it has a forward wall P2 generally rectilinear and a rear wall which in'- cludes one portion Padjacent the cutting plane of theknife and another portion P? extending substantially inwardly beyond the cutting plane of the knife. The portion P3 has a generally arcuate edge conforming generally to and closely ap^ proaching'the peripheryof the knife, as will be clear in Figures 2 and. The portion P4 extends `inwardly beneath the lower edge of the `guard.

positioned adjacent each endy of the trough.' These fianges P5 have atjlower faces P5 which conform to a corresponding `flat upper face on the base A. They are aperturedhas at PPI to permit the passage therethrough of securing pins P8 upwardly headedr as at P9. P1o are springs`,"'posi tioned within or beneath the baseiA, and com.

,ange is slotted in the side.y device it will be clear, as 4by comparison of theV Y pressed between the lower wall of the base A'and Y washers P11, whereby the heads l?g are normally downwardly drawn against the ilangesP. Note that, the right'hand flange `P5 is slotted in the end, as shown in Figure 4, whereas the left hand vIn removing the flange has been withdrawn from operative con-` "nection with its corresponding securing pin.

Note that' the flanges are bevelled as at P12 to permit their ready insertion beneath the heads P9.` Note also that the flange-K5 of the slice receiving member K overlies the inner wall P3 of the pan, as will be clear from Figure 10. Note also that the pan is aligned beneath the scraper E3 and receives the discharge therefrom and also is positioned to receive whatever material if any may flow down the inner guard plate D.`

It will be realized that whereas I have described and shown a practical and operative device, nevertheless many changesmight be madeV in the size, shape, number and disposition ofparts without departing from the spirit of my invention. I therefore wish my description and drawings to be taken as in a broad sense illustrative and diagrammatic rather thanas limiting me to my specific showing. i

The use and operation of my invention are as follows: i Y i 1 The structure` herein described and shown forms a light, easily operated and efficient slicf ing machine of the manual feedtype, in which the rotary knife C5 is rotated at relatively high speed by electric motor means. The carriage H3 is guided by the tracks H H1, but the carriage is moved manually by the hand of the operator.

plane is the pusher plate J, which is also man? plate.

ually operated. For example, the operator may grasp with his hand the sleeve J4, the arm Jz'or the handle J1. By thrusting forwardly along the cutting plane and somewhat inwardly toward the i cutting plane the work is thrust into effective contact with the forward face of the gauge plate L2. A continuation of the inclined thrust carries the carriage and the work, properly gauged,`

against the cutting edge of the knife'C5. "The slice is cut and falls uponthe slice receiving tray K. The work meanwhile "continues across the i face of the guard plate E until the work has been entirely carried past the cutting'edge and the slice has been severed. The operator then manually withdraws the carriage and repeats his inclinedthrust for the `ensuing stroke and slice.

' Ready removal of the guard plate E is impor charge-or drippings from-the forward face of the outer guard plate E and also from the inner guard member D. The projection of the wall P*1 Vof the pan beneath the guard plate E and into opposition with the lower` edge of the guard D will be clear from Figures 3 and 4. The pan can readily be applied and removed, since it is received and held by spring actuated headed securing pins. The method of removal is indicated in Figure 4, the right hand pinserving as any axis when the pan as a -whole is rotated into or out of operative position. After it has been rotated into the dotted line position of Figure 4, it may be withdrawn readily endwise from the remaining pin.

I claim: l

1. In a slicing machine including a base, a knife thereon and means for actuating it, and a carriage and means for guiding the carriage past the cutting edge of the knife, a guard plate for the forward face of said knife and a frame portion extending upwardly from said base, adapted to support said guard plate, and means for securing said guard plate on said frame por-l tion, including securing pins adapted to receive the lower edge of said guard plate, a plurality of plate engaging members on said pins, yielding means for 4thrusting them together against 0pposite sides ofthe plate,` said members being provided with opposed bevelled faces adapted to permit ready penetration of the guard plate therebetween, said bevelled `faces being flared widely apart when said plate engaging members are` in contact with each other, and additional means forl securing the upper edge of the guard 2.'In a slicingA machine including a base, `a knife thereon and means for actuating it, and a carriage and means for guiding the carriage past the cutting edge of the knife, a guard plate for the forward face of said knife and a frame portion extending upwardly from said base, adaptedto support .said guard plate,` and means for securing said guard plate on said frame portion, including securing pins adapted to receive the lower edge of said guard plate, a plurality of As will be clear from Fig,

plate engaging members on said pins, yielding `means for thrusting them together against opposite sides of the plate, said members being provided with opposed bevelled faces adapted to permit/ready penetration of the guard plate therebetween said bevelled faces being 'flared widely apart when said plate engaging members are in contact with each other, and additional means for securing the upper edge of the guard plate, said guard plate being provided with slots adaptedto be penetrated by said securing pms.

3. In a slicing machine including a base, a knife thereon and means for actuating it, and a carriage and means for guiding the carriage past the cutting edge of the knife, a guard plate for the forward face of said knife and a frame portion extending upwardly from said base, adapted to support said guard plate, and means for securing .said guard plate on said frame portion, including securing pins adapted to receive the lower edge of said guard plate, a plurality7 of plate engaging members on said pins, yielding means for thrusting them together against opposite sides of the plate, said members being provided with opposed bevelled faces adapted to permit ready penetration of the guard plate therebetween said bevelled faces being flared widely apart when said plate engaging members are in contact with each other,

' and additional means for securing the upper edge ofthe guard plate, the lower edge of said guard plate being outwardly inclined.

4. In a slicing machine including a base, a knife thereon and means for actuating it, and a carriage and means for guiding the carriage past the cutting edge of the knife, a guard plate for the forward face of said knife and a frame portion eX- tending upwardly from said base, adapted to support said guard plate, and means for securing said guard plate on said frame portion, including securing pins adapted toV receive the lower edge of said guard plate, a plurality of plate engaging members on said pins, yielding means for thrusting them together against opposite sides of the plate, said members being provided with opposed bevelled faces adapted to permit ready penetration of the guard plate therebetween said bevelled faces being flared Widely apart when said plate engaging members are in contact with each other, and additional means for securing the upper edge of the guard plate, and a manually engageablehandle positioned on the upper portion of the guard plate;

5. In a slicing machine including a base, a knife thereon and means for actuating it, and a carriage and means for guiding the carriage past the cutting edge of the knife, a guard plate for the forward face of said knife and a frame portion extending upwardly from said base, adapted to support said guard plate, and means for securing said guard plate on said frame portion, including securing pins adapted to receive the lower edge of said guard plate, a plurality of plate engaging members on said pins, yielding means for thrusting them together against opposite sides of the plate, said members being provided with opposed bevelled faces adapted to permit ready penetration of the guard plate therebetween said bevelled faces being flared widely apart when said plate engaging members are in Contact with each other, and additional means for securing the upper edge of the guard plate, including a flange adapted to extend over and engage an upper edge of said frame portion.

6. In a slicing machine including a base, a knife thereon and means for actuating it,` and a carriage and means for guiding the carriage past the cutting edge of the knife, a guard plate for the forward face of said knife and a frame portion extending upwardly from said base, adapted to support said guard plate, and means for securing said guard plate on said frame portion, including securing pins adapted to receive the lower edge of said guard plate, a plurality of plate engaging members on said pins, yielding means for thrusting them together against opposite sides ofthe plate,` said members being provided with opposed bevelled faces adapted to permit ready penetration of the guard plate therebetween said bevelled faces being flared widely apart when said plate engaging members are in contact with each other, and additional means for securing the upper edge of the guard plate, including a flange adapted to extend over and engage an upper edge of said frame portion, and a cover plate adapted tooverlie said guard plate, and securing means for the cover plate adapted to penetrate the cover plate and guard plate and frame portion.

7. In a slicing machine including a base, a knife thereon and means for actuating it, and a carriage and means for guiding the carriage past the cutting edge of the knife, a guard plate for the forward face of said knife and a frame portion extending upwardly from said base, adapted to support said guard plate, and means for securing said guard plate on said frame portion, a scraper positioned adjacent the lower edge of the guard plate, and opposed to the forward face of the knife, a refuse pan mounted on the base for ready removal therefrom, said pan extending forwardly of the cutting plane on the carriageA side thereof, and being positioned in cooperative relation with the scraper and including a wall portion lying closely adjacent and conforming generally to a portion of the periphery of the knife, said refuse pan being forwardly removable from the machine, a portion of said refuse pan extending rearwardly beneath the lower edge of the guard plate.

8. In a slicing machine including a base, a knife thereon and means for actuating it, and a carriage and means for guiding the carriage past the cutting edge of the knife, a guard plate for the forward face of said knife and a frame portion eX- tending upwardly from said base, adapted to support said guard plate, and means for securing said guard plate on said frame portion, a scraper positioned adjacent the lower edge of the guard plate, and opposed to the forward face of the knife, a refuse pan mounted on the base for ready removal therefrom, said pan extending forwardly of the cutting plane on the carriage side thereof, and being positioned in cooperative relation with the scraper and including an arcuate wall portion lying closely adjacent and conforming generally to a portion of the periphery of the knife, said pan including a portion remote from the knife, extending substantially inwardly beyond the cutting plane, said arcuate edged wall portion lying substantially in the cutting plane, said refuse pan being forwardly removable from the machine, a portion of said refuse pan extending rearwardly beneath the lower edge of the guard plate.

9. In a slicing machine including a base, a knife thereon and means for actuating it, a guard plate for the forward face of said knife, and a frame portion extending upwardlyv from said base,

adapted toi support the guard plate, and meansV for securing said guard plate on said frame portion, an additional guard member on said frame portion, positioned to therear of the guard plate, and a refuse pan mounted on the base for ready removal therefrom, said pan underlying said guard plate and said additional guard member, and the space therebetween, said refuse pan including a rear wall generally aligned vertically with and extending beneath the lower edge of said additional guard member.

10. In a slicing machine including a base, a knife thereon and means for actuating it, a guard plate for the forward face of said knife, and a frame portion extending upwardly from said base, adapted to support the guard plate, and means for securing said guard plate on said frame portion, and a scraper, opposed to the edge portion of the knife, said scraper being mounted upon said guard plate, the guard plate including portions projecting from its general plane, said projecting portions being positioned above and below said scraper and being adapted to limit its 10 rotation when in normal operative position.`

WILLIAM J. CAMPBELL. 

